import base64
import time
from datetime import datetime

def get_current_timestamp():
    """获取当前时间戳"""
    return datetime.now().strftime("%Y-%m-%d %H:%M:%S")

def encode_image_to_base64(image_path):
    """
    将图片文件转换为base64编码
    参数:
        image_path: 图片文件路径
    返回:
        base64编码的字符串
    """
    try:
        with open(image_path, "rb") as image_file:
            return base64.b64encode(image_file.read()).decode('utf-8')
    except Exception as e:
        return str(e)

def decode_base64_to_image(base64_string, output_path):
    """
    将base64编码转换回图片文件
    参数:
        base64_string: base64编码的字符串
        output_path: 输出图片路径
    返回:
        bool: 转换是否成功
    """
    try:
        image_data = base64.b64decode(base64_string)
        with open(output_path, "wb") as file:
            file.write(image_data)
        return True
    except Exception:
        return False

def generate_mock_image_data():
    """
    生成模拟的图像数据
    返回:
        模拟的base64编码图像数据
    """
    return "base64EncodedMockImageData..."

def validate_image_data(image_data):
    """
    验证图像数据是否有效
    参数:
        image_data: base64编码的图像数据
    返回:
        bool: 数据是否有效
    """
    if not image_data:
        return False
    try:
        # 简单验证base64格式
        base64.b64decode(image_data)
        return True
    except Exception:
        return False